The seemingly sad story of Dallas firefighter Jesus Ventura is getting even sadder, at least if you believe the accusations just leveled by the U.S. Attorney's office.

Back in March, Ventura, 37, was arrested after he was accused of bringing a semi-automatic pistol into Fire Station #45, near West Commerce Street and Sylvan Avenue. As his colleagues tried to wrest it away, police said, Ventura started waving it around and pointing it at firefighter Jeff Dean, who filed the police report. The gun went off, but no one was hurt.

Ventura was placed on leave and released from jail. And yesterday, the feds say, he strolled into the Chase branch at 1881 Sylvan Ave.

According to the U.S. Attorney's office, here's what happened next:

The teller, who had only been employed at the bank for two weeks, stared at the robber, and he repeated several more times for her to give him the money. She stood at the counter, and Ventura's voice became more aggressive when he said, "Give me all the money" and raised his black backpack as he continued demanding money. The teller feared that he had a weapon in the backpack. She gave Ventura the money and he took a $20 bill from the money and slid it underneath the glass to the teller and stated, "Here is a tip for you."

Officers with the Dallas Police Department (DPD) arrested Ventura a short time after the robbery at a nearby business that he attempted to rob. When Ventura was arrested, officers recovered no weapon, but recovered the black backpack and the money stolen from Chase Bank.

The feds say Ventura walked out with $1,900. He now faces 20 years in prison and a $250,000 fine.